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BUG: KASAN: use-after-free in __lock_acquire+0x2cb4/0x3ff0 kernel/locking/lockdep.c:3295
Read of size 8 at addr ffff88803d7d26b8 by task syz-executor.2/25419

CPU: 0 PID: 25419 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433
 __lock_acquire+0x2cb4/0x3ff0 kernel/locking/lockdep.c:3295
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __raw_write_lock_bh include/linux/rwlock_api_smp.h:203 [inline]
 _raw_write_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:312
 sock_orphan include/net/sock.h:1801 [inline]
 nr_release+0x5d/0x360 net/netrom/af_netrom.c:524
 __sock_release+0xcd/0x2a0 net/socket.c:599
 sock_close+0x15/0x20 net/socket.c:1214
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f1f81bc3f8b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffef9bdb690 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000009 RCX: 00007f1f81bc3f8b
RDX: 0000001b31e20000 RSI: 0000001b31e24348 RDI: 0000000000000008
RBP: 00007f1f81d33980 R08: 0000000000000000 R09: 00000000c2ee2f26
R10: 0017915eacf8839d R11: 0000000000000293 R12: 00000000000f2de5
R13: 00007ffef9bdb790 R14: 00007f1f81d321f0 R15: 0000000000000032

Allocated by task 25445:
 __do_kmalloc mm/slab.c:3727 [inline]
 __kmalloc+0x15a/0x3c0 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 sk_prot_alloc+0x1e2/0x2d0 net/core/sock.c:1483
 sk_alloc+0x36/0xec0 net/core/sock.c:1537
 nr_create+0xb2/0x5d0 net/netrom/af_netrom.c:436
 __sock_create+0x3d8/0x740 net/socket.c:1365
 sock_create net/socket.c:1416 [inline]
 __sys_socket+0xef/0x200 net/socket.c:1458
 __do_sys_socket net/socket.c:1467 [inline]
 __se_sys_socket net/socket.c:1465 [inline]
 __x64_sys_socket+0x6f/0xb0 net/socket.c:1465
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 25419:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 sk_prot_free net/core/sock.c:1520 [inline]
 __sk_destruct+0x684/0x8a0 net/core/sock.c:1602
 sk_destruct net/core/sock.c:1617 [inline]
 __sk_free+0x165/0x3b0 net/core/sock.c:1628
 sk_free+0x3b/0x50 net/core/sock.c:1639
 sock_put include/net/sock.h:1713 [inline]
 nr_release+0x2dc/0x360 net/netrom/af_netrom.c:557
 __sock_release+0xcd/0x2a0 net/socket.c:599
 sock_close+0x15/0x20 net/socket.c:1214
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff88803d7d2340
 which belongs to the cache kmalloc-2048 of size 2048
The buggy address is located 888 bytes inside of
 2048-byte region [ffff88803d7d2340, ffff88803d7d2b40)
The buggy address belongs to the page:
page:ffffea0000f5f480 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffffea00013acc88 ffffea0002d6be08 ffff88813bff0c40
raw: 0000000000000000 ffff88803d7d2340 0000000100000003 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88803d7d2580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88803d7d2600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88803d7d2680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff88803d7d2700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88803d7d2780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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